Professor Grothendieck's tombstone is in an inconspicuous corner of the cemetery, covered with dust, and has not been visited for a long time.

He had been out of contact with people since his later years, and most of them didn't even know where he was buried, except for a few friends who knew where he lived.

According to the old priest, Grothendieck came here to pray almost every weekend except for the last two months of his life.

In the face of the old man's rambling preaching, Lu Zhou simply nodded, and then placed the bouquet in front of the tombstone.

In his own way, he sent a blessing to this great scholar in his heart, and thanked him for keeping those precious materials for himself, and then Lu Zhou turned around and left here.

It's not that he doesn't want to stay here longer.

It's just that he really didn't want to embarrass the director Giacombino next to him, so he stood there with a sad and deep expression.

In fact, there is nothing to be sad about at all, birth, old age, sickness and death are human nature, and being able to choose the life you like to spend the rest of your life is something that many people can't envy. His seclusion was a great loss for the mathematical community, but it was not a blessing for him.

After leaving the cemetery, Lu Zhou followed the old priest to his home not far from the church, and saw the remaining pile of materials in his garage.

The reason why I use the word heap is because there is a lot of information, like a small mountain.

It is said that in the 18th century, when academic communication was not developed, most European mathematicians relied on letters and posthumous manuscripts to "disclose" their research results, but Lu Zhou did not expect that he would be able to see such a "primitive" way of communication in the 21st century.

Although the materials were placed in piles, it was evident that the old man had put some effort into separating the drafts from the formal notes, and covered them with a layer of plastic sheeting to keep out the dust.

Seeing that these notes were so well preserved, Lu Zhou fulfilled his promise and made a symbolic donation of one million euros to the church of Saint-Lizier, which was supposed to be the cost of keeping the documents for eight years.

No matter how happy the old priest was at this huge amount of money, Lu Zhou took out his mobile phone and called the senior sister, asking her to help contact the local airlines in Paris that do logistics business, and entrusted them to send the collection and drafts back to China, and then got on the car back to Paris.

The rest is pretty simple.

In the case of Star Technology's irresistible price, the entrusted aerospace company stepped on the heels of the landing boat and his party to leave and came to the small town of Ometes, and the professionals were responsible for packing and taking away those precious materials, and sent them to the special plane to Jinling on the same day, and almost arranged fighter escort.

Returning to the hotel in the evening, and having hastily settled dinner in the cafeteria, Lu Zhou returned to his room, spread Professor Grothendieck's notes on the table, and turned the title page with great interest.

"A puzzle that even Professor Grothendieck can't solve? Let me see......"

It is rumored that Professor Grothendieck and his student Deligne worked on the Riemann conjecture and its generalization in the field of algebraic geometry before his seclusion, and it was during this period that the famous Wey conjecture was solved by Delinene.

If Professor Grothendieck was still studying mathematics after his seclusion, then it is very likely that he was working on the Riemann conjecture that he had solved.

However, just when Lu Zhou thought that he would see a research notebook on the Riemann conjecture, the moment his eyes made contact with the note, there was a hint of strangeness in his eyes.

“…… What is this? ”

Motive Theory?

Wrong!

Although he used abstract numbers, it was not the same thing as the motive theory he knew a lot about.

Continuing to look down, Lu Zhou turned the page and soon found that what was recorded in this notebook was completely beyond his expectations. This is not a Riemann conjecture at all, but a ...... He had never seen or even heard of mathematical propositions.

Professor Grothendieck has already given the method of proof for the first of these, and as for the second proposition, it seems that he has not solved it.

Intrigued by the puzzle that trapped Professor Grothendieck, Lu Zhou picked up a ballpoint pen from the table, pulled a piece of scratch paper, and used the unified theorem of algebraic geometry to make a simple transformation of proposition 2.

However, at the moment when he completed this operation, looking at the results on the paper, the whole person was stunned.

Another formulation of the Riemann conjecture!?

Quickly flipped a few pages to the back of the note, and when he saw the back part, Lu Zhou breathed a sigh of relief.

“…… Apparently Professor Grothendieck did not prove it. ”

It may have been his instinctive premonition that this proposition was actually the Riemann hypothesis, but he did not give a reasonable proof.

After all, the unified theory of algebra and geometry was not solved by itself until last year.

Lightly ticked the position of proposition 2 with a pencil, indicating that the proposition had been solved by himself, looking at the equation on this notebook, Lu Zhou fell into deep thought.

“…… It's definitely not just a few math problems. ”

These complex propositions are sufficient, even if they are published as mathematical conjectures.

Academic merit aside, at least in terms of difficulty, they are not much less than the millennial puzzle, and they are not at all something that can be accomplished by one person.

However, this is also the problem.

If he wanted to find the answer, Professor Grothendieck could have made this notebook public.

Now that the Internet is so developed, even if he still feels resistant to publishing his research results, he can publish them anonymously.

More people are not necessarily more powerful, but the opportunity to solve problems is always much greater than when a person thinks.

The tip of the pen lightly touched the scratch paper, and Lu Zhou's brow furrowed slightly.

At this time, he suddenly remembered a rumor.

According to a friend of Professor Grothendieck's former life, in his later years he was in a rather unstable state of mind and was addicted to the imagination of the devil.

For example, he believes that the devil has turned the beautiful speed of light, which should have been 300,000 kilometers per second, into an ugly 299,792.458 kilometers per second.

It's not clear why a brilliant mathematician would make such a fundamental mistake in weights and measures, but if it weren't for the fact that my friend fabricated, it probably happened for a reason.

In January 2010, the retiring pope suddenly wrote a letter to his former student, Professor Ilucy, announcing that all his writings published since his "disappearance" would not be reprinted.

This incident caused quite a stir at the time, because the two books that were withdrawn, "Foundations of Algebraic Geometry" and "Materials for the Algebraic Geometry Seminar", can be said to be the bible of algebraic geometry, and because of the author's own request, they should not be published or translated, which will only make it more difficult for people to obtain them.

Recalling the words on the handwritten letter to himself, Lu Zhou actually didn't quite believe that a mentally abnormal person could write those things.

What he preferred to believe was that something must have happened to the scholar that was difficult for him to understand.

Like what......

His pupils contracted slightly, and Lu Zhou suddenly thought of a possibility.

“…… Physics is the universal law of the universe, while mathematics is the universal language of the universe. ”

Chewing on the words he heard from Dr. Ryan repeatedly, looking at the mathematical calculations in his notes, Lu Zhou felt as if his thoughts had been opened in an instant, and the look in his pupils became brighter and brighter.

If his speculation is correct.

This is indeed not a purely mathematical proposition......

Rather, a language!

Lamp pen